SpaceX plans an ambitious in-orbit refueling test between two Starships in March 2025. "The orbital demonstration is a major step for Starship, and a crucial part of SpaceX's capability of delivering NASA's Artemis mission to the Moon," reports Gizmodo. The plans were unveiled during Spaceflight Now's recent interview (source: YouTube) with Kent Chojnacki, the deputy manager for NASA's Human Landing System program. Gizmodo reports: SpaceX is under a $53.2 million contract with NASA, signed in 2020, to use Starship tankers for in-orbit propellant transfer. During its third test flight, SpaceX transferred around 10 metric tons of liquid oxygen from Starship's header tank to its main tank while it was in space. The upcoming demonstration, however, requires a lot more of the launch vehicle. Two Starships will launch to low Earth orbit around three to four weeks apart, the spacecraft will meet and dock in orbit, and one will transfer propellant to another. After the demonstration, the two Starships will undock from one another and deorbit.

"Once you've done that, you've really cracked open the opportunity to move massive amounts of payload and cargo outside of the Earth's sphere," Chojnacki said during the interview. The in-flight propellant transfer tests are set to conclude in the summer. With in-flight refueling, NASA is aiming to develop technologies to "enable long-term cryogenic fluid management, which is essential for establishing a sustainable presence on the Moon and enabling crewed missions to Mars," the space agency stated when the contract was signed.

SpaceX is developing a version of Starship to land humans on the Moon in September 2026 as part of NASA's Artemis 3 mission. To prepare for the Moon mission, SpaceX is expected to launch between eight and 16 propellant tanker Starships into low Earth orbit in rapid succession. Each of the tankers will carry around 100 to 150 tons of liquid oxygen and liquid methane and will dock with a larger fuel depot. The orbiting depot will then connect with the Human Landing System Starship, filling its massive 1,200-ton fuel tanks. Once refueled, the Starship lander will continue its journey toward the Moon.

NASA hopes to stimulate in-space manufacturing through a multi-year "laser beam welding collaboration" with Ohio State University. The project "seeks to understand the physical processes of welding on the lunar surface," according to NASA.gov, "such as investigating the effects of laser beam welding in a combined vacuum and reduced gravity environment." The goal is to increase the capabilities of manufacturing in space to potentially assemble large structures or make repairs on the Moon, which will inform humanity's next giant leap of sending astronauts to Mars and beyond. "For a long time, we've used fasteners, rivets, or other mechanical means to keep structures that we assemble together in space," said Andrew O'Connor, a Marshall materials scientist who is helping coordinate the collaborative effort and is NASA's technical lead for the project. "But we're starting to realize that if we really want strong joints and if we want structures to stay together when assembled on the lunar surface, we may need in-space welding."

The ability to weld structures in space would also eliminate the need to transport rivets and other materials, reducing payloads for space travel. That means learning how welds will perform in space. To turn the effort into reality, researchers are gathering data on welding under simulated space conditions, such as temperature and heat transfer in a vacuum; the size and shape of the molten area under a laser beam; how the weld cross-section looks after it solidifies; and how mechanical properties change for welds performed in environmental conditions mimicking the lunar surface. "Once you leave Earth, it becomes more difficult to test how the weld performs, so we are leveraging both experiments and computer modeling to predict welding in space while we're still on the ground," said O'Connor.

In August 2024, a joint team from Ohio State's Welding Engineering and Multidisciplinary Capstone Programs and Marshall's Materials & Processes Laboratory performed high-powered fiber laser beam welding aboard a commercial aircraft that simulated reduced gravity. The aircraft performed parabolic flight maneuvers that began in level flight, pulled up to add 8,000 feet in altitude, and pushed over at the top of a parabolic arc, resulting in approximately 20 seconds of reduced gravity to the passengers and experiments. While floating in this weightless environment, team members performed laser welding experiments in a simulated environment similar to that of both low Earth orbit and lunar gravity. Analysis of data collected by a network of sensors during the tests will help researchers understand the effects of space environments on the welding process and welded material.
They performed that laser-beam welding in a vacuum chamber during the parabolic flight (on a Boeing 727), according to the article — and successfully completed 69 out of 70 welds in microgravity and lunar gravity conditions. "The last time NASA performed welding in space was during the Skylab mission in 1973...

"Practical welding and joining methods and allied processes, including additive manufacturing, will be required to develop the in-space economy."

This week Discover magazine looks at evidence — both old and new — for a ninth planet in our solar system: "Orbits of the most distant small bodies — comets or asteroids — seem to be clustered on one half or one side of the solar system," says Amir Siraj [an astrophysicist with Princeton University]. "That's very weird and something that can't be explained by our current understanding of the solar system." A 2014 study in Nature first noted these orbits. A 2021 study in The Astronomical Journal examined the clustering in the orbit and concluded that "Planet Nine" was likely closer and brighter than expected.

Astrophysicists don't agree whether the clustering in the orbit is a real effect. Some have argued it is biased because the view that scientists currently have is limited, Siraj says. "This debate for the last decade has a lot of scientists confused, including myself. I decided to look at the problem from scratch," he says.

In a 2024 paper, Siraj and his co-authors ran simulations of the solar system, including an extra planet beyond Neptune. "We did it 300 times, about 2.5 times more than what was done previously," Siraj says. "In each simulation, you try different parameters for the extra planet. A different mass, a different tilt, a different shape of the orbit. You run these for millions of years, and then you compare the distribution to what we see in our solar system...." They found that the perimeters for this possible planet were different than what has been previously discussed in the scientific literature, and they supported the possibility of an unseen planet beyond Neptune.

Scientists hope a new telescope will have the potential to see deeper into the solar system. In 2025, the Vera C. Rubin Observatory on Cerro Pachón — a mountain in Chile, is expected to go online. The observatory boasts that in the time it takes a person to open up their phone and pose for a selfie, their new telescope will be able to snap an image of 100,000 galaxies, many of which have never been seen by scientists. The telescope will have the largest digital camera ever built, the LSST. Siraj says he expects it will take "the deepest, all-sky survey that humanity has ever conducted." So, what might the Rubin Observatory find past Neptune? Based on the current literature, Siraj sees a few possibilities. One is that the Rubin Observatory, with its increased capabilities, might be able to see a planet beyond Neptune... "Next year is going to be an enormous year for solar system science," he says.
NASA points out that the Hawaii-based Keck and Subaru telescopes are also searching for Planet X, while "a NASA-funded citizen science project called Backyard Worlds: Planet 9, encourages the public to help search using images captured by NASA's Wide-field Infrared Survey Explorer (WISE) mission.

And starting next year the Rubin observatory will also "search for more Kuiper Belt objects. If the orbits of these objects are systematically aligned with each other, it may give more evidence for the existence of Planet X (Planet Nine), or at least help astronomers know where to search for it.

"Another possibility is that Planet X (Planet Nine) does not exist at all. Some researchers suggest the unusual orbit of those Kuiper Belt objects can be explained by their random distribution."

Thanks to long-time Slashdot reader Tablizer for sharing the news.

The James Webb Space Telescope has made groundbreaking discoveries, detecting the most distant galaxy yet and capturing an image of the closest directly-imaged exoplanet. "Judging by astronomers' interest in using Webb, there are many more to come," writes Ars Technica's Stephen Clark. With immense demand for observation time, Webb is set to explore a vast array of cosmic targets -- from early galaxies to exoplanet atmospheres -- offering insights that extend far beyond Hubble's reach. From the report: The Space Telescope Science Institute, which operates Webb on behalf of NASA and its international partners, said last week that it received 2,377 unique proposals from science teams seeking observing time on the observatory. The institute released a call for proposals earlier this year for the so-called "Cycle 4" series of observations with Webb. This volume of proposals represents around 78,000 hours of observing time with Webb, nine times more than the telescope's available capacity for scientific observations in this cycle. The previous observing cycle had a similar "oversubscription rate" but had less overall observing time available to the science community.

More than 600 scientists will review the proposals and select the most promising ones for time on Webb. The largest share of proposals would involve observing "high-redshift" galaxies among the first generation of galaxies that formed after the Big Bang. Galaxies this old and distant have their light stretched to longer wavelengths due to the expansion of the Universe. Research involving exoplanet atmospheres and stars and stellar populations were the second- and third-most popular science categories in this cycle. [...] It seems astronomers have no shortage of ideas about where to look. Maybe one day, new super heavy-lift rockets or advancements in in-space assembly will make it possible to deploy space telescopes even more sensitive than Webb. Until then, we can be thankful that Webb is performing well and has a good shot of far outliving its original five-year design life. Let's continue enjoying the show.

Somewhere off in interstellar space, 15.4 billion miles away from Earth, NASA's 47-year-old Voyager "recently went quiet," reports Mashable.

The probe "shut off its main radio transmitter for communicating with mission control..." Voyager's problem began on October 16, when flight controllers sent the robotic explorer a somewhat routine command to turn on a heater. Two days later, when NASA expected to receive a response from the spacecraft, the team learned something tripped Voyager's fault protection system, which turned off its X-band transmitter. By October 19, communication had altogether stopped.

The flight team was not optimistic. However, Voyager 1 was equipped with a backup that relies on a different, albeit significantly fainter, frequency. No one knew if the second radio transmitter could still work, given the aging spacecraft's extreme distance.

Days later, engineers with the Deep Space Network, a system of three enormous radio dish arrays on Earth, found the signal whispering back over the S-band transmitter. The device hadn't been used since 1981, according to NASA.

"The team is now working to gather information that will help them figure out what happened and return Voyager 1 to normal operations," NASA said in a recent mission update.
It's been more than 12 years since Voyager entered interstellar space, the article points out. And interstellar space "is a high-radiation environment that nothing human-made has ever flown in before.

"That means the only thing the teams running the old probes can count on are surprises."

NASA's economic impact report highlights that in fiscal year 2023, the agency's initiatives contributed $75.6 billion to the U.S. economy, created over 300,000 jobs, and drove advancements in areas like space exploration, climate research, and technology innovation. The agency's budget for that year was $25.4 billion. Space.com reports: The Moon to Mars program alone created $23.8 billion in economic output and 96,479 jobs, while investments in climate research and technology contributed $7.9 billion and 32,900 jobs. The report also drills down into impacts in each state, with 45 states seeing over $10 million in impact and eight states surpassing the $1 billion mark. [...]

NASA's missions supported 304,803 jobs across America, according to the report -- the third agency-wide study of its kind -- generating an estimated total of $9.5 billion in federal, state, and local taxes. Additionally, NASA's technological innovations and transfers in 2023 led to 40 new patent applications, 69 patents issued, and thousands of software usage agreements. A number of NASA technology spinoffs have become everyday household items. The full NASA economic impact report can be found here.

Ars Technica's Stephen Clark reports: For those who follow NASA's human spaceflight program, a burning question for the last year-and-a-half has been what caused the Orion spacecraft's heat shield to crack and chip away during atmospheric reentry on the unpiloted Artemis I test flight in late 2022. Multiple NASA officials said Monday they now know the answer, but they're not telling. Instead, agency officials want to wait until more reviews are done to determine what this means for Artemis II, the Orion spacecraft's first crew mission around the Moon, officially scheduled for launch in September 2025.

"We have gotten to a root cause," said Lakiesha Hawkins, assistant deputy associate administrator for NASA's Moon to Mars program office, in response to a question from Ars on Monday at the Wernher von Braun Space Exploration Symposium. "We are having conversations within the agency to make sure that we have a good understanding of not only what's going on with the heat shield, but also next steps and how that actually applies to the course that we take for Artemis II," she said. "And we'll be in a position to be able to share where we are with that hopefully before the end of the year."

While the space program is far down the list of most voters' priorities, this means a decision and announcement on what will happen with Artemis II won't come until the post-election lame duck period in the waning weeks of the Biden administration, and likely Bill Nelson's tenure as NASA administrator. This is several months later than NASA officials expected to make a decision. The question here is whether NASA managers decide it is safe enough to fly the Orion heat shield as-is on Artemis II, or if it is too risky with people onboard. Artemis II will be a 10-day mission taking its four-person crew on a path around the far side of the Moon, then back to Earth. This will be the first time people travel to such distances since the Apollo program ended more than 50 years ago.

"After safely splashing down on Earth as part of NASA's SpaceX Crew-8 mission Friday, a NASA astronaut experienced a medical issue," NASA reported Friday.

But today there's an update: After an overnight stay at Ascension Sacred Heart Pensacola in Florida, the NASA astronaut was released and returned to NASA's Johnson Space Center in Houston Saturday. The crew member is in good health and will resume normal post-flight reconditioning with other crew members.

As part of NASA's SpaceX Crew-8 mission [SpaceX's eighth crew-rotation mission to the ISS], the astronaut was one of four crewmates who safely splashed down aboard their SpaceX Dragon spacecraft near Pensacola on October 25. The crew members completed a 235-day mission, 232 days of which were spent aboard the International Space Station conducting scientific research.

To protect the crew member's medical privacy, specific details on the individual's condition and identity will not be shared.

Longtime Slashdot reader MattSparkes writes: NASA is working on plans to send another, much larger helicopter to Mars than Ingenuity. The "Chopper" craft would land itself after "screaming into" the planet's atmosphere at speed, before covering several kilometers a day while carrying scientific equipment. It would probably be the most graceful arrival on the red planet of any lander yet.

According to the Wall Street Journal, Boeing is weighing the sale of its space division. "The plans, which are reportedly at an early stage, could involve Boeing offloading the Starliner spacecraft and its projects supporting the International Space Station," reports The Verge. From the report: Boeing is facing a series of predicaments, including a fraud charge over 737 Max plane crashes and Starliner issues that left two astronauts at the ISS for months. Just this week, a Boeing-made satellite for Intelsat stopped working and fell apart suddenly after suffering an "anomaly."

"We're better off doing less and doing it better than doing more and not doing it well," Boeing CEO Kelly Ortberg said during an earnings call this week. "Clearly, our core of commercial airplanes and defense systems are going to stay with the Boeing Company for the long run. But there's probably some things on the fringe there that we can be more efficient with or that distract us from our main goal here."

However, sources tell the WSJ that Boeing will likely continue to oversee the Space Launch System, which will eventually help bring NASA astronauts back to the Moon. It's also reportedly expected to hang onto its commercial and military satellite businesses.

Four astronauts splashed down in the Gulf of Mexico on Friday after their record ISS mission stretched to eight months due to Boeing capsule malfunctions and hurricane disruptions. The SpaceX Dragon capsule landed off Florida's coast before dawn, carrying NASA astronauts Matthew Dominick, Michael Barratt, Jeanette Epps and Russian cosmonaut Alexander Grebenkin.

Technical issues with Boeing's Starliner capsule in September, followed by Hurricane Milton and persistent rough seas, delayed their planned return by two months. The crew launched in March as part of NASA's commercial crew program. Their replacements include Boeing Starliner test pilots Butch Wilmore and Suni Williams, whose mission expanded from eight days to eight months, alongside two SpaceX-launched astronauts. The new crew will remain aboard the station until February.

NASA has revealed a full-scale prototype for six telescopes designed to detect gravitational waves. Phys.Org reports: The LISA (Laser Interferometer Space Antenna) mission is led by ESA (European Space Agency) in partnership with NASA to detect gravitational waves by using lasers to measure precise distances -- down to picometers, or trillionths of a meter -- between a trio of spacecraft distributed in a vast configuration larger than the sun. Each side of the triangular array will measure nearly 1.6 million miles, or 2.5 million kilometers.

The Engineering Development Unit Telescope, which was manufactured and assembled by L3Harris Technologies in Rochester, New York, arrived at Goddard in May. The primary mirror is coated in gold to better reflect the infrared lasers and to reduce heat loss from a surface exposed to cold space, since the telescope will operate best when close to room temperature.

The prototype is made entirely from an amber-colored glass-ceramic called Zerodur, manufactured by Schott in Mainz, Germany. The material is widely used for telescope mirrors and other applications requiring high precision because its shape changes very little over a wide range of temperatures. The LISA mission is slated to launch in the mid-2030s.

NASA will rely on SpaceX's Crew Dragon for two crewed missions to the ISS in 2025 while evaluating whether Boeing's Starliner requires another test flight for certification. SpaceNews reports: In an Oct. 15 statement, NASA said it will use Crew Dragon for both the Crew-10 mission to the ISS, scheduled for no earlier than February 2025, and the Crew-11 mission scheduled for no earlier than July. Crew-10 will fly NASA astronauts Anne McClain and Nichole Ayers along with astronaut Takuya Onishi from the Japanese space agency JAXA and Roscosmos cosmonaut Kirill Peskov. NASA has not yet announced the crew for the Crew-11 mission.

Earlier this year, NASA had hoped that Boeing's CST-100 Starliner would be certified in time to fly the early 2025 mission. Problems with the Crew Flight Test mission, which launched in June with NASA astronauts Butch Wilmore and Suni Williams on board, led NASA to conclude in July that the spacecraft would not be certified in time. It delayed that Starliner-1 mission from February to August 2025, moving up Crew-10 to February. NASA also announced then that it would prepare Crew-11 in parallel with Starliner-1 for launch in that August 2025 slot. "The timing and configuration of Starliner's next flight will be determined once a better understanding of Boeing's path to system certification is established," NASA said in its statement about the 2025 missions. "NASA is keeping options on the table for how best to achieve system certification, including windows of opportunity for a potential Starliner flight in 2025."

For the first time in 50 years, humans will walk on the moon again. Currently planned for as soon as 2026, the Artemis III mission "will be one of the most complex undertakings of engineering and human ingenuity in the history of deep space exploration..." writes NASA. "Two crew members will descend to the surface and spend approximately a week near the South Pole of the Moon conducting new science before returning to lunar orbit..."

And they'll be wearing Prada, according to a Space News report from Milan: At a briefing at the International Astronautical Congress here October 16, Axiom and Prada revealed details about the Axiom Extravehicular Mobility Unit (AxEMU) suit that Axiom is creating for use by NASA on lunar landing missions starting with Artemis 3... Axiom emphasized the advanced capabilities in the suit, particularly when compared to the suits worn by the Apollo astronauts on moonwalks more than a half-century ago [including greater redundancy and healthy monitoring systems not available in Apollo-era suits]...

The unveiling came just over a year after Axiom announced it was working with luxury goods company Prada, an unconventional partnership intended to leverage Prada's expertise in materials and design... [Axiom's executive VP of extravehicular activity Russell Ralston] said Axiom has leveraged Prada's expertise in fabrics and garment design in helping create the outer layer of the suit, which reflects sunlight and keeps dust from getting into interior layers... "If you look across all the different technologies that are needed within the suit, the uniqueness of those technologies and their application, the supply chain has tended to be pretty unstable," he said. "So, one of the things that Prada has really helped us with is bringing stability to that base, especially on the fabric side...."

Not surprisingly, Prada also contributed to the appearance of the suit. "One of the things that was important to us was the appeal of the suit, the look of the suit," Ralston said. "Something that Prada brought to the table was helping with the general aesthetic of the suit." One design aspect that brought the two companies together was a prominent red stripe on the suit. Ralston noted that was a nod to a NASA tradition where the mission commander's suit would have that red stripe to distinguish them from another spacewalker...

While the current focus of the suit is for walking on the moon, Ralston said the suit can be easily adapted for applications in low Earth orbit, such as spacewalks from the International Space Station or Axiom's future commercial space station.
The article adds that 30 people worked on the suit (full- or part-time). "These suits will give the astronauts increased range of motion and flexibility to explore more of the landscape than on previous lunar missions," according to NASA.

With "the ability to send high quality images and video to the ground with advanced communication technology, they will be sharing a unique new human experience with the world."

Thanks to long-time Slashdot reader schwit1 for sharing the news.

Longtime Slashdot reader schwit1 shares an op-ed written by Michael R. Bloomberg, founder and majority owner of Bloomberg LP, the parent company of Bloomberg News, UN Special Envoy on Climate Ambition and Solutions, and chair of the Defense Innovation Board: There are government boondoggles, and then there's NASA's Artemis program. More than a half century after Neil Armstrong's giant leap for mankind, Artemis was intended to land astronauts back on the moon. It has so far spent nearly $100 billion without anyone getting off the ground, yet its complexity and outrageous waste are still spiraling upward. The next US president should rethink the program in its entirety. As someone who greatly respects science and strongly supports space exploration, the more I have learned about Artemis, the more it has become apparent that it is a colossal waste of taxpayer money. [...]

A celestial irony is that none of this is necessary. A reusable SpaceX Starship will very likely be able to carry cargo and robots directly to the moon -- no SLS, Orion, Gateway, Block 1B or ML-2 required -- at a small fraction of the cost. Its successful landing of the Starship booster was a breakthrough that demonstrated how far beyond NASA it is moving. Meanwhile, NASA is canceling or postponing promising scientific programs -- including the Veritas mission to Venus; the Viper lunar rover; and the NEO Surveyor telescope, intended to scan the solar system for hazardous asteroids -- as Artemis consumes ever more of its budget. Taxpayers and Congress should be asking: What on Earth are we doing? And the next president should be held accountable for answers.

The Euclid mission has revealed the first part of a 3D map of the universe, showcasing 14 million galaxies and tens of millions of stars with unprecedented detail. "The Euclid mission, launched in 2023 and run by the European Space Agency (Esa) with contributions from Nasa, sent its first snapshots in November of that year and in May 2024," reports The Guardian. "The goal of Euclid is to enable the creation of a 3D map in time and space of the universe, in an attempt to elucidate its evolution and, as a result, shed light on the mysterious phenomena of dark energy and dark matter that together make up 95% of the universe." From the report: The newly released data is a mosaic of 208 gigapixels and covers 1% of what will be the final map. The completed map is expected to involve six years of observations and will take in a third of the sky, with observations expected to capture billions of galaxies out to 10 billion light years. [...] Images released by Esa highlight the area of the sky covered by the new mosaic, together with the mosaic itself and zoomed-in views within it.

Esa said regions of light blue that can be seen in the mosaic were galactic cirrus clouds that sit between stars in the Milky Way. These wispy clouds, composed of gas and dust, reflect optical light, allowing them to be captured by the mission's super-sensitive visible light camera. Zoom in on the mosaic further and other features can be seen, including the spiral galaxy NGC 2188 and the galaxy cluster Abell 3381. In a view zoomed in 600 times relative to the original mosaic, a distant swirling galaxy is visible in incredible detail.

NASA's Europa Clipper mission lifted off successfully on Monday, marking the agency's first mission to Jupiter in over a decade. The $5.2 billion spacecraft aims to investigate whether Europa, Jupiter's fourth-largest moon, could harbor conditions suitable for life. A SpaceX Falcon Heavy rocket launched from NASA's Kennedy Space Center in Florida at 12:06 p.m. Eastern time, lifting the Europa Clipper spacecraft into orbit around Earth.

Europa Clipper, NASA's largest-ever interplanetary craft, weighs 12,500 pounds and boasts solar panels spanning 100 feet. Its nine scientific instruments will study Europa's surface and interior in unprecedented detail. After a 1.8 billion-mile journey, the spacecraft will reach Jupiter in April 2030. It will then conduct 49 flybys of Europa over four years, coming within 16 miles of the moon's surface.

Scientists believe Europa's subsurface ocean could contain twice as much water as Earth's oceans. The mission will measure ocean depth, analyze surface compounds, and map Europa's magnetic field to gather clues about its internal composition. Instruments will search for warm spots indicating thin ice, potential cryovolcanoes, and plumes of water vapor. The spacecraft will also attempt to identify carbon-based molecules that could serve as building blocks for life. "Europa is certainly the most likely place for life beyond Earth in our solar system," Robert Pappalardo, Europa Clipper project scientist, told the New York Times.

NASA confirmed that it's working with international partners and standards organizations to create a Coordinated Lunar Time (LTC) for future lunar exploration. This time standard will account for relativity and be scalable for other celestial bodies, supporting long-term missions like Artemis and commercial space activities. From the report: The lunar time will be determined by a weighted average of atomic clocks at the Moon, similar to how scientists calculate Earth's globally recognized Coordinated Universal Time (UTC). Exactly where at the Moon is still to be determined, since current analysis indicates that atomic clocks placed at the Moon's surface will appear to 'tick' faster by microseconds per day. A microsecond is one millionth of a second. NASA and its partners are currently researching which mathematical models will be best for establishing a lunar time.

To put these numbers into perspective, a hummingbird's wings flap about 50 times per second. Each flap is about .02 seconds, or 20,000 microseconds. So, while 56 microseconds may seem miniscule, when discussing distances in space, tiny bits of time add up. "For something traveling at the speed of light, 56 microseconds is enough time to travel the distance of approximately 168 football fields," said Cheryl Gramling, lead on lunar position, navigation, timing, and standards at NASA Headquarters in Washington. "If someone is orbiting the Moon, an observer on Earth who isn't compensating for the effects of relativity over a day would think that the orbiting astronaut is approximately 168 football fields away from where the astronaut really is."

In a rare disclosure, the U.S. Space Force announced that its secretive X-37B spaceplane will execute a series of maneuvers before returning back to Earth. SpaceNews reports: The reusable spacecraft, which has been in orbit since December 28, 2023, will perform aerobraking maneuvers to alter its trajectory around Earth, the Space Force said Oct. 10. This technique involves making multiple passes through the planet's upper atmosphere, using atmospheric drag to modify the vehicle's orbit while conserving fuel. These maneuvers also are intended to showcase responsible space operations, the Space Force said. The aerobraking enables the spaceplane to change orbits and comply with space debris mitigation rules by safely discarding the service module.

The X-37B, manufactured by Boeing, is jointly operated by the U.S. Space Force and the Air Force Rapid Capabilities Office. Since its launch aboard a SpaceX Falcon Heavy rocket from NASA's Kennedy Space Center in Florida, the spaceplane has been conducting radiation effect experiments and testing space domain awareness technologies in a highly elliptical orbit. [...] After completing its aerobraking maneuvers, the X-37B will resume its testing and experimentation objectives. Once these are accomplished, the vehicle will de-orbit and return to Earth, utilizing its autonomous landing system to touch down horizontally like a conventional aircraft. The Space Force has not disclosed the expected duration of the current mission.

The Hera spacecraft, launched by the European Space Agency on Monday, is on a mission to study the aftermath of NASA's 2022 test that successfully knocked the Dimorphos asteroid off course by intentionally crashing a probe into it. It's scheduled to arrive in December 2026. The BBC reports: The Hera craft launched from Cape Canaveral in Florida at 10:52 local time (15:52BST) on Monday. [...] The Hera mission, which is run by the European Space Agency, is a follow-on from Nasa's Double Asteroid Redirection Test (DART) project. Dimorphos is a small moon 160m-wide that orbits an asteroid close to Earth called Didymos in something called a binary asteroid system. In 2022 Nasa said it successfully changed Dimorphos's course by crashing a probe into it. It altered the rock's path by a few meters, according to Nasa's scientists. The asteroid was not on course to hit Earth, but it was a test to see whether space agencies could do it when there is genuine risk. When it arrives in two years, the Hera craft will look at the size and depth of the impact crater created on Dimorphos. Two cube-shaped probes will also study the make-up of the asteroid and its mass.